Extended Double Zepp NVIS Antenna.
Extended Double Zepp Antenna for NVIS operations. Views expressed in this Amateur/Ham Radio Antenna project are those of the reporters and Correspondents. Accessed on 12 November 2025, 2124 UTC. Content provided by "West Mountain Radio." URL-- https://www.westmountainradio.com/antenna_calculator_zepp.php Please check URL or scroll down to read your selections. Thanks for joining us today. Russ Roberts (KH6JRM). https://simplehamradioantennas.blogspot.com. Extended Double Zepp NVIS Antenna Calculator The measurements below are for building a Extended Double Zepp Near Vertical Incident Skywave (NVIS) Antenna. The Wire Size can range from 16 AWG to 12 AWG. The larger the wire, the wider the bandwidth. The antenna is constructed much like an ordinary Dipole antenna but with 5/8 Wavelength Elements matched with an added Impedance Matching Section of balanced feed line. The Matching Section is 450 Ohm Open Wire Feedline and is a compromise impedance between the 5/8 Wave antenna el...